The Conqueror : Mysterious Son-in-law

Josh Silver the heir of the Silver family together with his brother lived a tough life because of their grandfathers orders. He fell in love with Bonna Jenner the campus belle in his school. She treated him well in their highschool days. He swore that she will give her all the love and lifetime glory in this life.
After a 7 years of battling in the outer region Josh established a powerful organization that shook the entire world.
He returned to inherit the entire Silver family. However his grandfather gave him a last mission to be a live in son-in-law. Not only to find out that his fiancee is his first love.
Can he accept the sudden change of his life? Can he protect the love of his life from his enemies? Can he the conqueror in the battlefield will be able to conquer her?